/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "can.h"
#include "dma.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
uint16_t usLightRes = 0;
uint16_t usLightVol = 0;
extern uint16_t aucAdcBuf[40];
/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

CAN_RxHeaderTypeDef RxHeader;
CAN_TxHeaderTypeDef TxHeader;

uint8_t RxData[8] = { 0 };

void canFilterConfig()
{

  CAN_FilterTypeDef sFilterConfig;

  sFilterConfig.FilterBank = 0;
  sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
  sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT;

  // sFilterConfig.FilterIdHigh = 0x200 << 5;
  // sFilterConfig.FilterIdLow = 0x0000;
  // sFilterConfig.FilterMaskIdHigh = 0x4F0 << 5;
  // sFilterConfig.FilterMaskIdLow = 0x0000;

  sFilterConfig.FilterIdHigh = 0x0000;
  sFilterConfig.FilterIdLow = 0x0000;
  sFilterConfig.FilterMaskIdHigh = 0x0000 ;
  sFilterConfig.FilterMaskIdLow = 0x0002;

  sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;
  sFilterConfig.FilterActivation = ENABLE;
  sFilterConfig.SlaveStartFilterBank = 14;

  if (HAL_CAN_ConfigFilter(&hcan, &sFilterConfig) != HAL_OK)
  {
    Error_Handler();
  }
}

void sendCanTest(uint32_t uiStID)
{
  CAN_TxHeaderTypeDef TxHeader;
  uint8_t TxData[8] = { 0 };
  uint32_t TxMailbox;

  TxHeader.StdId = uiStID;
  TxHeader.ExtId = 0;
  TxHeader.RTR = CAN_RTR_DATA;
  TxHeader.IDE = CAN_ID_STD;
  TxHeader.DLC = 8;
  TxHeader.TransmitGlobalTime = DISABLE;

  TxData[0] = 0;
  TxData[1] = 1;
  TxData[2] = 2;
  HAL_CAN_AddTxMessage(&hcan, &TxHeader, TxData, &TxMailbox);
}
uint32_t uiCout = 0;
void canReportLight(void)
{
		
		uint32_t TxMailbox;
	
		uiCout = 0;
		
    TxHeader.StdId = 0x400;
    TxHeader.ExtId = 0;
		TxHeader.RTR = CAN_RTR_DATA;
		TxHeader.IDE = CAN_ID_STD;
		TxHeader.DLC = 2;
		TxHeader.TransmitGlobalTime = DISABLE;

		uint8_t TxData[8] = { 0 };
	
    TxData[0] = (uint8_t)(usLightRes >> 8);
		TxData[1] = (uint8_t)(usLightRes);

    while (HAL_CAN_GetTxMailboxesFreeLevel(&hcan) == 0)
    {
			uiCout++;
			if(uiCout > 5000)
			{
				uiCout++;
				break;
			}
    }

    HAL_CAN_AddTxMessage(&hcan, &TxHeader, TxData, &TxMailbox);
}

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_ADC_Init();
  MX_CAN_Init();
  /* USER CODE BEGIN 2 */
	
	canFilterConfig();
	HAL_CAN_Start(&hcan);
	HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO0_MSG_PENDING);
	
	
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		for(uint8_t i = 0;i < 10;i++)
		{
			usLightVol += aucAdcBuf[i];
		}
		usLightVol /= 10;
		
//		(4096 - usLightVol) / 10000 = usLightVol / r;
		usLightRes = 10000 * usLightVol / (4096 - usLightVol);
		canReportLight();
		HAL_Delay(200);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI14|RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSI14State = RCC_HSI14_ON;
  RCC_OscInitStruct.HSI14CalibrationValue = 16;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

volatile uint8_t can_test;

void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan) {
  if (HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &RxHeader, RxData) == HAL_OK)
  {
   
			switch (RxHeader.StdId)
			{
					case 0x400:
						can_test = can_test;
					break;
			}
		
  }
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
